Friction pendulum bearing for seismic isolation in hospitals, schools, and libraries

Friction Pendulum Bearing(FPS)

Our Friction Pendulum Bearing (FPS) is a high-performance seismic isolation solution for both buildings and bridges. As a trusted manufacturer, Hebei Guchen delivers self-centering friction pendulum bearings that reduce seismic energy input by 50%–80%, ensuring structural safety in high seismic intensity areas. Choose from single (FPS-I) and dual (FPS-II) sliding surface types, with customizable vertical bearing capacity (1000–30000 kN) and low dynamic friction coefficient (0.01–0.07) for your project needs.

Friction Pendulum Bearing (FPS)

1. Technical Specifications

1.1 Product Category

Friction pendulum isolation bearings (FPS) are classified into two types: Type FPS-I (Single sliding surface friction pendulum bearing) and Type FPS-II (Dual sliding surface friction pendulum bearing). Both types are engineered to deliver reliable seismic protection for bridge friction pendulum bearings and building friction pendulum bearings.

FPS-I Single sliding surface friction pendulum bearing for building seismic isolation — FPS-I Single sliding surface friction pendulum bearing – Ideal for building seismic isolation

FPS-II Dual sliding surface friction pendulum bearing for bridge seismic isolation — FPS-II Dual sliding surface friction pendulum bearing – Suitable for bridge seismic isolation

1.2 Product Structure

Our friction pendulum seismic isolation bearings are composed of six key components: 1. Upper and lower anchorage devices 2. Upper bearing plate 3. Upper sliding friction surface 4. Spherical crown body 5. Lower sliding friction surface 6. Lower bearing plate. This robust structure ensures stable performance for high capacity friction pendulum bearings in construction projects.

1.3 Product Specifications

1.3.1 Vertical bearing capacity (kN): 1000, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, 6000, 7000, 8000, 9000, 10000, 12500, 15000, 17500, 20000, 25000, 30000 (20 grades)
1.3.2 Ultimate displacement (mm): ±200, ±250, ±300, ±350, ±400, ±450, ±500, ±550, ±600 (9 grades)
1.3.3 Swinging period (s): 2, 3, 3.5, 4, 4.5, 5, 5.5, 6 (8 grades)
1.3.4 Dynamic friction coefficient: 0.01-0.02, 0.03-0.05, 0.04-0.07 – Perfect for self-centering friction pendulum bearings

2. Mechanical Properties of Friction Pendulum Isolation Bearings

No.	Performance Category	Test Item
1	Compression Performance	Vertical Compression Deformation
2	Compression Performance	Vertical Load-Bearing Capacity
3	Shear Performance	Static Friction Coefficient
4	Shear Performance	Dynamic Friction Coefficient
5	Shear Performance	Post-Yield Stiffness
6	Shear Performance Correlation	Correlation with Number of Cyclic Loads
7	Shear Performance Correlation	Temperature Correlation
8	Horizontal Ultimate Deformation Capacity	Ultimate Shear Deformation

3. Product Core Advantages

3.1 High-Quality Raw Materials for Reliable FPS Bearings

Our friction pendulum isolation bearings are favored by structural designers for their simple structure and stable performance. The core technology lies in the friction pair composed of premium PTFE, modified PTFE, and modified UHMWPE friction materials—directly determining the bearing’s friction coefficient, a key indicator of seismic isolation bearing performance.

With mature manufacturing experience, we offer multiple friction coefficient options for building FPS bearings and bridge FPS bearings, enabling reliable seismic protection and enhancing structural safety. All friction materials are independently developed for seismic engineering, ensuring long service life.

Friction Material Performance Parameters

No.	Item	PTFE Friction Material	Modified PTFE Friction Material	Modified UHMWPE Friction Material
1	Density ρ / (g/cm³)	2.14 < ρ ≤ 2.20	2.0 < ρ ≤ 2.10	0.93 < ρ ≤ 0.98
2	Tensile Strength / MPa	≥ 30	≥ 21	≥ 30
3	Elongation at Break / %	≥ 300	≥ 300	≥ 250
4	Ball Indentation Hardness (H132/60) (H / MPa)	23 ≤ H ≤ 33	26.4 ≤ H ≤ 39.6	26.4 ≤ H ≤ 39.6
5	Linear Wear Rate (μm) when sliding against stainless steel or hard chrome-plated steel under unlubricated conditions	≤ 200.0
6	Creep Compression Set	≤ 0.0005 h₀
Note: h₀ refers to the initial exposed height of the test specimen.

3.2 Advanced Testing for High-Performance FPS Bearings

To ensure the reliability of our friction pendulum bearing (FPS), we are equipped with full sets of advanced dynamic compression-shear testing equipment and a professional laboratory. Our tests cover all key performance indicators required by international seismic isolation bearing standards, guaranteeing quality for bridge seismic isolation bearings and building seismic isolation bearings.

Dynamic compression-shear testing machine for FPS-II friction pendulum bearing in factory laboratory

Professional testing for high capacity friction pendulum bearing (FPS) for bridges

3.3 Proven Track Record in Building & Bridge Projects

Our friction pendulum seismic isolation bearings have been widely applied in hospital seismic retrofits, high-rise building base isolation, and bridge construction projects. With numerous successful cases, our products have undergone rigorous market validation, demonstrating mature performance for both building FPS seismic isolation bearings and bridge FPS bearings.

Friction pendulum bearing (FPS) installation for building seismic isolation at construction site — Friction pendulum isolation bearings (FPS) being installed for building seismic protection

3.4 Customizable FPS Bearings from Trusted Manufacturer

As a genuine manufacturer, Hebei Guchen Engineering Rubber Co., Ltd. offers advanced design and production capabilities for friction pendulum bearings. We provide customized solutions for double concave friction pendulum bearings (DCFPB), PTFE sliding surface FPS bearings, and other specialized types to meet your project’s unique requirements.